TDT Medusa4Z User Manual page 44

5. Launch TDT's RPvdsEx software and open
C:\TDT\BioSigRZ\RCX\RZ6_Click_Calibration.rcx
6. In the circuit, double-click the ConstF component labeled Microphone Amplification Level
and set its value to match the Gain knob on your RZ6. Typically 40-60 dB works well, if your
microphone has 1-3 mV/Pa sensitivity. If you are bypassing the amplifier, set the gain in the
circuit to 1.
7. In the circuit, modify the ConstF labeled Microphone Calibration Voltage to match the
sensitivity of your microphone.
To run the circuit:
1. Click the Compile, Load, and Run button on the tool bar.
2. Start with a low voltage in the Desired Voltage Amplitude ConstF and slowly increase this
value. Re-compile, load and run (step 8) after you make any modification to the circuit.
3. When the dBSPL level shown in the top right corner of the screen matches your desired level,
make a note of the voltage you are using in the ConstF labeled Desired Voltage Amplitude.
4. This voltage and the corresponding dB level should be entered in the click signal stimulus
configuration file found at:
C:\TDT\BioSigRZ\SIG\Click.sig
a. To open the SigGenRZ stimulus design software (included with BioSigRZ), click the
Windows Start menu, click All Programs, click TDT Sys3, click SigGen Solutions, and
then click SigGenRZ.
This program can be used to edit stimulus files.
Calibration | 44